Imagine a health monitor for the city, but instead of measuring heart rate or daily steps, this device measures everything from air quality to vehicle traffic.

The idea may sound like science fiction, but it’s becoming a reality for cities like Chicago through the Array of Things project, a collaborative effort between scientists, universities, local government and community members to collect real-time data on the city.

The project, based out of Argonne National Laboratory, is led by Charlie Catlett, director of the Urban Center for Computation and Data at UChicago and Argonne. Catlett is aiming to install 500 sensor nodes around Chicago and eventually setup a network around the world “to improve living and working in the city.”